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Oura Ring

Compared to PSG-derived

sleep:

Sensitivity for sleep: 98%

Specificity for wake: 27%

Sleep Agreement: 89%

Compared to ECG-derived

heart rate:

Absolute difference: 1.8 bpm

Correlation: 0.85

Compared to ECG-derived

heart rate variability:

Absolute difference: 18.9ms

Correlation: 0.63